What is closing line value (CLV)?
Closing line value (CLV) is the difference between the odds you got when you placed a bet and the market's final price, the closing line, right before the event started. Positive CLV means you beat the market. It is the clearest evidence sharp bettors have of long-run skill, more reliable than looking at whether a run of bets has won or lost.
Team FootyMetrics
Updated Jul 2026 · 6 min read
- Closing line value is the gap between the odds you bet at and the market's closing price, expressed as a percentage.
- The closing line is treated as the best available estimate of the true odds, because it has absorbed all the money and information available right up to kick off.
- Beating the closing line consistently is one of the strongest signals of long-run betting skill, and it shows up in far fewer bets than waiting on results alone.
- Positive CLV does not mean a single bet wins. It is a long-run signal, not a guarantee on any one game.
What is closing line value?
Closing line value is the difference between the odds you took when you placed a bet and the odds the market settled on just before the event kicked off, the closing line. If you back a team at odds better than where the market ends up, you have positive CLV on that bet. If the market moves further in your favour after you bet, meaning your price looks worse next to the close, that is negative CLV.
CLV is not about whether the bet wins. A bet can lose and still have beaten the closing line, and a bet can win with poor CLV. It is a separate measurement, of whether you got a better price than the market eventually settled on, not of the final result.
Why the closing line is the best estimate of the true odds
A market’s closing line is the price right before the event starts, after every piece of team news, weather update and layer of betting money has had a chance to move it. Sharp bettors and syndicates tend to bet late and bet the sharpest books, so the closing price reflects their money too, not just early public opinion. Because the market has had the most time and the most information to correct itself, the closing line is treated by professional bettors as the best available estimate of an event’s true probability, better than the opening line and better than any single bettor’s own view at the time they placed a bet.
Pinnacle, whose own closing odds are widely used as the benchmark for this because the book takes sharp action rather than limiting it, frames CLV this way for exactly that reason: if you can consistently get a better number than where a sharp market ends up, that is evidence you are pricing the game better than the market was at the time you bet, not just picking winners.
Why Pinnacle specifically
Working out CLV: a worked example
Say you back a team to win at odds of 2.10. By kick off, the market has moved and the same bet is trading at 1.95. You beat the closing line, so you have positive CLV. The calculation works in implied probability, which is just 1 divided by the decimal odds, turned into a percentage.
- Your bet, 2.10: 1 / 2.10 = 47.6% implied probability.
- The closing price, 1.95: 1 / 1.95 = 51.3% implied probability.
The market’s final view of that team’s chances is 51.3%, but you got a price that only implied 47.6%. The difference, 51.3% minus 47.6%, is 3.7 percentage points of positive CLV. The market ended up rating that team roughly 3.7 points shorter than the price you actually got.
The bet does not have to win for this to count. CLV measures the price you got against the market’s final price, not the final score.
Why CLV is a better long-run signal than your win/loss record
Football betting is high variance. A correctly priced bet with a real edge can still lose plenty of times in a row, and a poorly priced bet can string together wins purely on luck. Judging your own skill from a short run of results mixes your actual edge together with normal variance, and it takes a large number of bets before profit and loss on its own separates a skilled bettor from a lucky one.
CLV strips variance out of the picture, because it compares your price against the market’s price at the same moment for the same game, rather than against a random result. That is why professional and sharp bettors track it as a leading indicator: a bettor showing consistent positive CLV across enough bets is getting the football right more often than the closing market did, which is a much faster read than waiting on results alone. Betting analyst Joseph Buchdahl, writing for Pinnacle Odds Dropper, has tracked his own CLV-based staking against his actual results and found the two line up closely over time, in his case an actual return on turnover of 3.4% against a CLV-implied expected return of 4.0%, close enough to support CLV as a genuine leading indicator rather than a separate number that happens to look good.
How to actually track CLV
Tracking CLV takes one habit: record the odds you bet at, then record the closing odds for the same selection right before kick off, every time.
- Note the exact odds and the bookmaker at the moment you place each bet.
- Check the same market again just before kick off, ideally at a sharp book like Pinnacle, and record that closing price.
- Convert both to implied probability and take the difference, or keep a running spreadsheet if you are betting often enough that doing it by hand gets tedious.
- Look at the average CLV across all your bets, not any single one. A handful of bets tells you very little. Dozens or hundreds start to show a pattern.
FootyMetrics’ player matchups tool builds fair odds for player prop markets from underlying data rather than a single bookmaker’s line, which is useful groundwork for the same exercise: comparing what a market is actually offering against a more considered estimate of the true price, the same comparison CLV makes against the closing line.
Positive CLV doesn't guarantee a win
Beating the closing line does not mean any one bet was a good bet in hindsight, and it does not guarantee that bet wins. A bet can have strong positive CLV and still lose, because the outcome of a single football match is still decided by variance, not by the price. CLV is a long-run signal, built up over many bets, not a verdict on any single result.
Closing line value FAQs
What is closing line value in betting?
It is the difference between the odds you bet at and the market's final closing price before the event starts, expressed as a percentage. Positive CLV means you beat the market's closing price.
Why is the closing line considered the true odds?
Because it is the market's price after all available information and money, including sharp betting action, has had time to move it, so it is treated as the most accurate estimate available before an event.
Does positive CLV mean a bet will win?
No. CLV measures whether your price beat the market's final price, not the outcome of the match. A bet can have strong positive CLV and still lose.
How do you calculate CLV?
Convert both your bet odds and the closing odds to implied probability (1 divided by the decimal odds) and take the difference. A closing implied probability higher than your bet's implied probability means positive CLV.
Is CLV a better measure of skill than win/loss record?
Over a small number of bets, yes, because win/loss results are dominated by variance in the short run. CLV compares your price against the market at the same moment, so it shows a signal well before profit and loss alone would.
Do bookmakers use CLV to identify sharp bettors?
Yes. Because consistently beating the closing line is a strong signal of pricing skill, some recreational sportsbooks monitor customer CLV and use it as one factor in decisions to restrict or limit an account.
What is a good closing line value percentage?
There is no agreed threshold. Professional bettors judge average CLV across hundreds of bets rather than any single figure. Consistently positive CLV of any size over a large sample is the meaningful signal, not hitting a specific percentage target.
How do you track your own CLV?
Record the odds and bookmaker at the moment you place each bet, then record the closing price for the same selection just before kick off, ideally at a sharp book like Pinnacle. Convert both to implied probability, take the difference, and judge the average across all your bets rather than any single one.